Pith Number

pith:QU4S73P2

pith:2019:QU4S73P2US2P5JAUFPBHYVH7HS

not attested not anchored not stored refs pending

Unique continuation for a non bi-Laplacian fourth order elliptic operator

Amrita Ghosh, Tuhin Ghosh

arxiv:1908.05882 v2 · 2019-08-16 · math.AP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QU4S73P2US2P5JAUFPBHYVH7HS}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-05T00:03:00.559121Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

85392fedfaa4b4fea4142bc27c54ff3c977fb1176441a949b0d3c2e71a89360b

Aliases

arxiv: 1908.05882 · arxiv_version: 1908.05882v2 · doi: 10.48550/arxiv.1908.05882 · pith_short_12: QU4S73P2US2P · pith_short_16: QU4S73P2US2P5JAU · pith_short_8: QU4S73P2

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/QU4S73P2US2P5JAUFPBHYVH7HS \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 85392fedfaa4b4fea4142bc27c54ff3c977fb1176441a949b0d3c2e71a89360b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b3cb356a558f58cb8ce3ec46ee2e59d06a2762b1fdd9dc3502cc222f509aa735",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2019-08-16T08:17:16Z",
    "title_canon_sha256": "de4c1653e856d2d65f37bbd6d7a26150958dc66376c403be431d58699cc59126"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.05882",
    "kind": "arxiv",
    "version": 2
  }
}